A book is made of folded sheets of paper, each comprising four pages.
One of the sheets has page numbers 88 and 169. How many pages are there
in the book? What is the sum of all the page numbers in the book?

My students and I have done the paper-folding thing several times, and we
thought it was only possible to fold a single sheet of paper 7 or 8
times. A couple of days ago on TV they said 10 times! Do you agree?